chuck

When I first bought my lathe, I've made this device afraid of letting the key in chuck.
As a side effect, it becomes very convenient when I finish a part I just grab the key (to remove part) and lathe stop.

I have the MicroLux lathe with its standard 3 inch 3 jaw chuck. Chuck has both inside and outside hard jaws, looks to be the same as the Little Machine Shop #1187. I need to hold a thin brass disk, 1/8 thick. Does anyone know where to buy (or how to make) soft, machineable jaws for such a chuck?

Question about how far down I can lower the knee. I'm using a chuck on my rotary table and a boring head.
I have barely enough room left to get tooling in. Had to use a short 3" boring bar. I can see another 2 inches of shiny ways below where the knee is stopped by the limit switch.
Is there...

I have this ancient three jaw scroll Chuck with no real markings on it. I tried to use it and the run out was absolutely terrible it was actually visible. It measured on the order of 7 thousands.
It came with it lathe parts that I purchased and I didn't really inspect it before I threaded it on...

Hello hobby-machinists, I am using the clamping force of collet chucks to squeeze some metal cylinders. I would like to make this process easier by having the collet be powered by the shop air.
I have read about 5C pneumatic collet chucks, and I am wondering if there are other sources for...

I need a drill chuck that closes completely at the center. most chucks leave about 3/32 opening. I'm trying to chuck wire into it for straightening, using a hand drill.
I have looked at using Collete's or some other technique, or maybe using a dremel but ideally i would have some kind of...